PS

Jill --

?(JFF 0ANTr
MV PLEASURE rO
HELP OUT, SON -
AS WE SA'v IN THIE
PENTAGON -
MAINTENANCE IS A
COMMAIMP
IRESPONSiVaLITV!
(GR`-R-FZ-

clo h

I N THIS ISSUE

FIREPOWER 2-18

Be Your Own lospeclar" 02. .9421 N9

AIR MOBILITY 19-27
RescindedliWO's t o rilt 24
M2 211 Well.br 5
Spark Plug Tool 22 CowlingRacA 2
Spark Plug Pub 23 0*13 27
DA Form ?408-5 27

a ~COMMUNICATIONS 37-41 t
M/URC-4 37 RT-70 39
A NK Volume Knobs Il Switchboard Tip 40
TK-25 38 r lift 41

POW GROUND MOBILITY 42-45
01 Change42 M49C 4
111913 43 A 45

GENERAL AND SUPPLY
New Pubilcabans n Check Alcohol Word 8
7arquiag 46416 lubetennirslit BU
DFr20- 51441 CBRIniter 6
MIDl= ~ 53 DA Form 2407 6 4
P M Unit Coe S M.P.D

Use of funds for prlnf of this p public.
Rapp11ist at the Amy. 19 Fdarry 196L
DISTRIBUTION9: In accordance wfth re-
qptr~nmft saM W an B DA( Form 12-C

# "OQU R *v^
L*r*4sWpE CToO~

''TRLIMP MOLLOY "' IS
' W- NAME MAINTENANCE
IS M GAME. FOLLOW
M\ E ON THIS "BYOI'--
ANJP GET WITH IT.

Your ol' reliable hM2 is a might) talented chunk of iron, what with
the way it can be used with different mounts. with a switch of parts
here and a change of parts there.
If it's going to live up to its reputation,- though, it needs some help
- the preventive maintenance kind from )ou. Knowing what to
look for is half the job .getting things fixed that need fixing is the
other half. Read on and you'll see what to look for. The things that're
in bohl green I. pe are what you want to tend to now -or even sooner.
Because the .50-cal has different uses, one set of components the
backplate group, f'rinstance won't be the same for all the M2's. So
pick out the group )ou have in your weapon and work from there.
While you'ree giving your shooting' iron the once-over, look for din,
rust and the like. And also look for loose rivets, which is something
you don't want your gun to have.
Now, on with the inspection.
3
MORE

A
tl
kB

y 'OUR M2 Is USED
WITH MANY COMBINATIONS.
TB 9-1005-213- 10,'
SHOWS VOU HOW THE
M2 15 USED IN DIFFERENT
SETUPS, AND IDENTIFIES
THEM BY NUMBER.

V

BARREL ASSEMBLY

CHAMBER Look for the
same thing as in the bore,
except for small ring.

BORE-Pitted, carboned, metal-fouled,
bulged, rings. Don't be tooled by the "ring"
8 to 10 inches from the breech end. What
you see is a gap to allow for expansion of
the satellite liner when the barrel gels hot
from firing.

BARREL EXTENSION GROUP

BARREL EXTENSION Sides bent,
cracked; camways burred; bolt
guide grooves and breech lock
slot burred; shank worn, battered,
loose; threads burred, stripped.
I

BREECH LOCK Burred,
cracked, binds in breech
lock slot, installed wrong
o way. Not latest type (Must
have notch in top).

__- -'

r -1
SPRING Loose, not
staked;lugs damaged,
missing.

COVER LATCH SHAFT LEVER-
Busted, missing.

COVER EXTRACTOR CAM-Burred,
badlyworn, loose.

COVER LATCH SPRING STUD-
Worn, cracked, busted.

BELT FEED LEVER--Bent, crack-
ed, busted; operating lug not at
90-degree angle to body of lever
as it should be; lock pin (also called
bobby-type pin)missing (don't use
cotter key in its place); shoulder
pin burred, bent, missing; plunger
broken, missing; lever not set up
for correct direction of feed.

COVER EXTRACTOR SPRING STUD
Worn, cracked, broken.

BELT FEED PAWL ASSEMBLY--
Slide cracked, binds;stud cracked,
busted; pin loose;retaining spring
missing, broken, weak; arm bent,
broken; spring not installed right
(oval end wants to be in pawl, with
loop pointing down and away from
belt feed pawl arm); pins bent,
busted; pawl binds in slide.

DETENT PAWL--Broken, missing
(cover will close of its own weight
if pawl, or spring, is busted or miss-
ing).

COVER GROUP

COVER LATCH -Burred, binds,
loose; washer missing; cotter key
missing, installed wrong.

L

b

SEAR SPRING -Not install-
ed right (should be in sear
hole and nolch in bottom
of bolt), deformed, weak.

BOLT I GROUP

BOLT BODY ASSEMBLY Doesn't slide free.
ly, burred. (If bolt is retracted with cover up
and then cover is closed and the bolt re-
leased, the belt leed lever lang will not seat
in the bolt groove, giving you a battered
tang and a burred bolt body I; firing pin hole
plugged, not round.

DRIVING ROD AND SPRINGS -
Springs broken, weak.coils flatten-
ed (from rubbing);rod shows more
than 14 in bend when rolled on
f1at surface, cracked, broken: studs
bent, broken.

SEAR SLIDE Binds or is
loose in guide grooves,
notch for sear battered.
...0b

ACCELERATOR STOP & STOP
LOCK Busted, bent.

COCKING LEVER -Bent.
burred especially where
it cams.

EXTRACTOR-Bent. claw chipped;
elector pinnot staked, broken.

BOLT STUD-Burred,busted.
(See if lock ring is missing
from M1O charger.)

0

BOLT CAM GROOVES AND
T SLOT Burred, cracked,
chips or carbon buildup in
T-slot.

FIRING PIN EXTENSION Binds,
bent, cracked: sear notch beat up;
spring weak, busted.

BARREL BUFFER GROUP

BREECH LOCK DEPRESSORS
- Move sideways (a slight
up and down movement is
OKI, cracked, broken, don't
stay in body, twisted.

BUFFER BODY SPRING LOCK
- Weak, not staked, burred.

ACCELERATOR Claws and
tips cracked, broken,burred.

ACCELERATOR PIN Brok-
en, missing, binds; retaining
spring weak, missing.

f

BACK PLATE GROUP
FLEXIBLE GUN
HANDLE FRAMES Bent, BOLT LATCH RELEASE-
crackcd, broken. Cracked, busted.

BOLT LATCH RELEASE LOCK HANDLE PLATE -
!r; .. doesn'tt hold bei (;r. T ea broken.
-I,; ,.i. .e .:o,,n .o p,. ,

I
BUFFER TUBE Adlusting screw
LATCH & LATCH LOCK Beat up, loose, slot not in horizontal posi"
don't oid back plate in ;ecei'e: tion;:luif[.- f. rayeC, crcite.
latch lock pin installed wjrog, nui broken, wrong nmirmbgr (buffer must
keyed (head of pin should be up contain 22 disks); plate broken.
and cotter key on the boHom). missing: pin and spring missing;:
sleeve crac' ;e, busred, missing.
TURRET GUN
The components chat're different from chose on the flex:
SOLENOID-Loose on buffer tube,can't
,s adjusted (do the adjusting accord- SPR S Y
ing to your TM); wiring frayed, loose, SPRING, SAFEY &
,ioi.-iin;i.,:reciorloose. batteredsairt FILLER PIECE-
11f0A l~cLr:PMIi~ZLor l~e. batter eds a, rrBroken. (Only M45
hiring broken, missing; plunger won't broken. (Only M4
*;eat, broken, nuts and screws loose., and M48 have all
missing. three parts. The
flex doesn't have
CLAMP ASSEMBLIES Weak, broken; filler piece.)
saatety vire uroken mris'ing.
TRIGGER --Doesn't fire weapon, loose
CLIP ASSEMBLY on buffer tube, broken, safety wire
Weak, busted. busted, not attached; nut and screw
missing.

F1

r u

RECEIVER GROUP
BEFORE AND AFTER
FIRING, PM ISA
MUST.. CHECK OUT
YOUR RECEIVER GROUP TRUNNION BLOCK- Crack-
THOROULGHLY.
ed, chipped, gouged.

BACK PLATE FEEDWAY AND
GUIDE CUTS Burred, bat-
tered.

BELT HOLDING PAWLS- Cracked,
broken, binds, missing; springs
weak, wrong kind, missing; brack-
ets loose, bent; belt holding pawl
pin not installed.

SIDE PLATES Bent, cracked, dented, bulged;
extractor switch broken;threads stripped;nut loose,
missing; cotter key broken, missing; spring weak,
missing.

GROOVES-Burred, beat-up. .

TOP PLATE- Dented, bulged,
cracked; DA Label 19 (on
headspacing) can't be read,
missing.

12

ALL TYPES OF MOUNTS

BOTTOM PLATE -Mounting brack-
ets cracked, holes not round; plate
dented, cracked, bent; breech lock
cam loose, has too much play (should
float slightly) binds; cotter key or
safety wire broken, missing; nut,
spring and screw missing. '

ADJUSTABLE TRIGGER BAR STOP
--Screw threads stripped; body
cracked, broken; nut loose, miss-
ing, threads stripped; spring weak,
busted.

TRIGGER BAR Binds, bent, crack-
ed, busted, doesn't have notch in
top; not installed; trigger bar pin
assembly bent, missing, lock broken.

SOLENOID TRIGGER BAR
(On M45 Only)-- Bent, bur-
red, busted.

BOLT STOP- Bent, brok-
en, missing. ..-s

BARREL SUPPORT PIN--T
Not seated, busted, cotter
key missing.

GROUP FLEX AND XM26 CUPOLA

SOLENOID Loose,can'! be adiusred:
plunger badly worn, brrke!, cover bat-
tered, missing: wiring frayed, loose,
broken: connectors loosebrnken: safety
wirebroken, missing; bolts loose.

RECEIVER GROUP
Ml

FEX, M13, XM26 AND M45 AND M48 (WHICH HAS FRONT CARTRIDGE STOP ONLY.)
FRONT CARTRIDGE REAR CARTRIDGE LINK STRIPPER -
STOP Assembled STOP Assembled Burred, doesn't move,
wrong. fils light, wrong, doesn't prongs busted.
busted. move, broken.

15

RETRACTING SLIDE ASSEMBLY
FLEX AND M45

LEVER -Cracked, loose on slide;
spring installed wrong, weak,
busted; nut and washer missing;
nut not keyed right,missing; cotter
key broken, missing.

BOLTS-Loose,broken; nuts
loose, missing; cotter keys
broken,missing.
[b-- ---- :n

BOLT HANDLE (when
used)-Burred, busted.

HANDLE--Wood cracked,
splintered, doesn't turn
freely, loose in lever.

M10 CHARGER M, YOU CAN'T
M1, M13, XM26 AND M48 FI'E.

SPRING HOUSING-Cracked;
spring doesn't work, busted. OVERALL CHARGER -
Loose on gun. y

COVER-Dented, !wisten, SLIDE Burred, binds.
cra.hld ,lips bent or oriokin. -*1- pulley worn, binds, bur
Sred.
SAFETY WIRES-
broken, mismine.

HOUSING Dented,
sted, cracked. SWIVEL Binds; pulley
burred, binds.
PLATE Beat-up.
-PLE- Beat-up. CABLE Kinked, stands
broken, ball ends missing.
LATCHES-Don't hold cover
and swivel pulley plate, HANDLE-Burred, cracked,
broken. doesn't stay on cable.

In addition ro the guns, some of the equipment used with them needs close
eyeballing.

FLASH HIDER ASSEMBLY

HEADSPACE and TIMING GAGES

Remember to have people up the maintenance line check the gages annually.
KNOW YOUR PUBS

You also want to take a close look at your other tools and equipment now and
again-items like cleaning rods and gun covers-to make sure they're not two
hoots and a holler from being in such bad shape that they can't be used again.
No marrer what publications you might have-like TM 9-2320-224-25P
(Dec 64) for the MI 14and M114A1 armored command and reconnaissance
carrier--there're three others that you can also use. These are FM 23-65 (Dec
55) with Ch 1 (22 May 56) and Ch 2 (10 Mar 59) ... LO 9-1000-228-12(18
May66) ... and TB 9-1005-213-10/1 (27 Mar 64). The TB tells you what M2
.50-cal guns go with what mounts.
And don't forget your PLL-TM 9-2300-223-20P (28 Jul 65)-when you
have a weapon that's issued with tank-automotive equipment. And TM 9-1005-
213-12P (14 Jan 64) and change I (17 Mar 64) is for you if your shooter's a
separate TOE line item.

RESCINDED MODIFICATIONS sTOP
T-lE TW's
RESCINPEP!

Dear Windy,
There seems to be just a little bit of confusion about aircraft modifications
that have not been applied to our aircraft. The old TM-I's, TO's, TB's and
MWO's authorizing them have long since been canceled.
Can you tell me how to maintain an up-to-date DA Form 2408-5 on this age-
old problem? Sgt R. P. K.

Dear Sergeant R. P. K.,
No sweat.
It's true that some pubs were canceled before all the aircraft were modified.
In some cases, the aircraft configuration change was done, in fact, by the
replacement of old parts with new parts.
In other cases the modification was not done, but it is not legal to apply a
canceled modification. You may be able to get an exception, tho, if you can
justify incorporating the modification on the basis thatwithout it (as an example)

you have a safety-of-flight hazard.
In such a case your request should go to:

Ordinarily, tho, here's the way you
should fill out the DA Form 2408-5 on
a rescinded modification -
On the left side, enter the usual info.
On the right side of the form enter
Rescinded by DA Cir 310-XX (and the
date) that's all there is to it.
A rescinded modification is not re-
quired to be done and therefore does
not have any adverse effect on the
materiel readiness status of your birds.

2. REGISTRAR

H 13 H
5.

DATE MWO
AND KIT NUMBERS) APPLIED
(Day/Mo/yr)
e f
F WINTERIZATION RESCINDIO BY
O-WLINDA (H- 310-11
OWLING (O-13) 9 1966Q

THE

was swung away from the chopper -
you guessed it the ring broke, the
hoist flipped and the transmission ended
up in a heap!!

BROKEN
RING

USE
COMPLETE LOCK RING CAN'T
PIN CARRY THE LOAD
Next, don't overload the hoist on a
transmission lift or the hoist will take
it on the chin. You have to keep a steady
hand pull on the last bolt to come out
(the link bolt) as the hoist begins to

k[EP STEADY PULL
ON LINK BOLI
take the load. Cranking the hoist past
the bolt release point means you're try-
ing to lift the whole kit and caboodle.
So, when a mechanic kept cranking
on the hoist recently, something had to
give. A pulley broke as it's supposed
to when you try to lift more than the
hoist capacity of 600 pounds. 'Course
this prevented breakage to a more costly
bird pArt. One of the mounting brackets
also let go.

OVER CRANKING CAUSES...
BROKEN PULLEY BUSTED BRACKET

Finally, remember that lifting a
weighty transmission, engine or rotor
head is a two-fisted operation.
Be sure your hands are not greasy
... slips count. Put your left hand firmly
on the brake handle and your right
hand firmly on the hoist handle.
Release the brake by pulling it to-
ward you but keep your left hand
on the brake just in case and crank

6L IIY KEPHEAND |
H^ ^LA ,/\ Oil

away with your right hand. When you
finish cranking, put the brake on by
pushing your left hand forward, sure
'nuff.
To swing the hoist be sure the area
is clear and, again, use both hands on
the pivoting bar.
21

KNOW)

CLEAN YOUR

SPARK PLUG

INSERTS

Dear Editor,
Anytime you use more than hand pressure to put a spark plug into a jug
you can wind up with an under-torqued plug and, after awhile, a loose plug
.. 'taint a healthy situation!!
That's what happened to our Beaver (U-6) when carbon hardened in the
brass spark plug insert. Although the torque wrench read right the carbon pre-
vented the plug from getting tightened enough. So, we made up a little clean-
ing tool that works like.a charm on solid inserts. Of course, the tool's not used
on heli-coil inserts because you might damage the threads or loosen the insert.
We took a shot 18-mm plug and cut 6 grooves in it--cutting thru the first
thread and decreasing the depth to zero half-way up the threaded barrel.
Now, when a plug doesn't go into the cylinder with hand pressure we reach
for this gem, put a little grease on it and screw it into the insert one turn
in back off a half turn one turn in. ... The tool picks up the carbon and
deposits it in the grooves.
With a clean insert you get a free-running plug and the right torque,
every time.
Wade Briggs
Ft Eustis, Va.

SSHOT 18-MM PLUG

(UT SIX
GROOVES

(Ed Note Looks like a good tap, especially if you're in the boonies and you
don't have the tap in your spark plug cleaning kit handy. Just be sure you
set the piston at top dead center and take out the opposite spark plug. Then you
can use compressed air to blow out carbon that might have fallen into the
cylinder.) 4

6RRR ...
I CUT
CARBON T'
PIECES.

~L/ 0

I

SAn air-.rpe who has been around a
Bea'cr (U-6) anm length of time knows
that the prop is a grease slinger -
which is a prert good reason for fol.
lowing the lube chart in TM 55-15 10.
20320 (2 Aug 65, to the Ikrer.
'Course this means hand-packing
general purpose grease into the counter-
weight bearings during a daily. on
props without spinners (Inrermediatc
-with spinners) and into the counter-
weight thrust bearings every second
Periodic.The blade bushings get the gun
treatment with low and high tempera-
ture grease every Intermediate.
When you lube the counterweight
bearings daily, tho, be sure you give
your bird a good runup before she
heads for the blue 'cause, sure as
shooting excess grease is going to land

ii ur ur

on the windshield. ing struts and
landing gear.
Then you can wipe off the excess
grease so the pilot can see where he's
going cuts down on post-flight
writeups.
Another point. When your bird is
parked be sure the prop is turned hori-
zontal. If it's left in a vertical position,
rain will run into the bearings and
speed up the grease exiting process -
for real!

SPARK PLUG PUB RUB

You say: tat the pub .for your spark plug cleaning kit, FSN 749i0786-9271,
in the. aircaft organiational A Supplemental, B and CTool Kits has become a
collector's item? .OKI then just order a replacement pub ona DA Forith. 17. You
wait TM 9-4910-422-12 (1 L Jun 64) Kit, Spadt Plug Ochiiag. 4.

WEIGHT KIT HAS CLASS

THAT'S NOT
SREMEAMER... THE ONLY CLASS
AIRCRAFT THING AROUND
la ELECTRONIC wEIGHIN& HEREf

Keeping the class in mind will save you a lot of time and sweat looking thru
the DA Pam 310-4 index for the technical manual.
Like-you run your finger down the TM 55 line until you come to 6670
and there you have it TM 55-6670-200-15 (28 Sep 64).
8"S'O 5UlRE HA IS-

NOW HEAR-70 THIS!
GOT R ATF/

Keeping the class in mind will save you a lot of time and sweat looking thru
the DA Pam 310-4 index for the technical manual.
Like--you run your finger down the TM 55 line until you come to 6670
and there you have it ... TM 55-6670-200-15 (28 Sep 64).

SNOW HEAR THIS!

Hold one before you list the radio
call number on the tail of your aircraft
as being the serial number for your
TM 38-750 forms.

(Ail NIIuRI 7 i nnl

True, the call number is taken from
the serial number on the bird data plate
as called for in TB AVN 7, Change 5
* (8 Feb 66) para 76. But the call number
is not the serial number and there has
been a lot of rejected info to prove
the point.
What happens when a form goes
forward with a bogus serial number,
or none at all? Well, the data processing
center checks the number against a
master file. The result is a rejected
punch card that has to be corrected
(ugh!!).
So, keep the straight poop flowing -
letters, dashes, slashes, numbers by
copying the whole serial number off
the data plate.
24

L/, "

36" 12"MATERLAL5: 67.5

SHEATHING OR 3 SHEET5 4'XB'.
109' 9" OF I'ANJG.E IRON OR
EXTRULEL ALUMINUM ANGLE.
Dear Editor,
Cowingrealy ake a eatng henits tkenoffan ircaftandlai o

(Ed Note Looks real good for cutting down on sheet metal repairs.)
25

Every member of Indian tribe
Whirlybird knows that Big Chief
Chinook (number 47 in CH tribe) car-
ries a heap of forked lightning in his
cargo hook like static electricity.
UGH!
Big Chief turns it loose on palefaces
when they try hitch-up job at round-up
time for downed birds or cargo. Bird
watcher looks like he's doing snake
dance while full of "kick-a-poo" juice
when he touches hook in belly of
Chinook. He should have look-see into
recovery and evacuation of Army air-
craft, TM 55-413 (19 Apr 66).
This paleface pub has sure-fire cure
for this shocking development. The
answer is a discharge probe an in-
sulated brass rod shaped like a shep-
herd's staff at one end and joined by a
length of metallic braid to a ground
rod at the other.
When ready for a hook-up, ground
crewman drives rod into earth like
tepee pole. Then he takes probe and
catches cargo hook.

When contact is made, Big Chief's
pent-up power now flies like arrow
thru probe into the ground.
No static .. no shock.
No spark to ignite spilled fuel .
no smoke signal!
With probe, ground crewman
steadies the cargo hook so other ground
types can safely grab the cargo hook
to finish the hitch-up.
GROUND
ROUND INSULATING
(TOD GP-ELECIC
(TYPE GP-81 Zt

MTAWIC
BRAID
(25-FT LENGTH)

'Course if the probeman loses contact
with the cargo hook, he must regain it
before the others touch the hook with
their hands otherwise zowie!
So-o-o make straight tracks to tepee
shack. Make with tools and hardware
quick-like and fixum probe, hokey?

KED SHOCKS SHOT

Dear Windy,
On a Periodic we inspect our Sioux (OH-13)
enengine sprag shock mounts to see if the rubber
is shot but there is one check that has us baffled.
.c
'I a ,
shot but ther 's on. check th
we inspect
TM 55-1520-204-20 (1 Jun 65) chop 5, sect 11,
gne s rag hack '.a unt. to
a -55- 1 520-204.20 ( I Jun
para 5-18 says to check the rubber for cracks
n k d or
0and for being oil-soaked or deteriorated.
rSince there seems to be oil on these babies
all the time, how do you tell when they're
oil- soaked?
SP6 H. W. W.

... IF FILM OF 0il REAPPEARS
IT'S OIL-SOAKED

Dear Specialist H. W. W.,
True true .. these mounts do collect oil that should be wiped off during
the Daily in order to cut down on deterioration of the rubber.
As for an oil-soaked mount, try this for size. Clean the rubber thoroughly
with mild soap and water. About 12 hours later eye the mount and if a film of
oil reappears on the idle chopper, it's oil-soaked.
'Course an oil-soaked, soft or cracked shock mount is not going to dampen out
vibrations so it gets replaced, sure 'nuff. .

MAYBE YES MAYBE NO
Are you short a DA Form 2408-5 on THE
THE INDEX.
an aircraft component? Well, maybe 1i WOT YOU ARE
... maybe not. LOOKIN' FOR.
The surest way is to check the
index, DA Pam 310-4. If you locate an a -4
MWO or one-time TB inspection on "'
the component, you ought to have a l'"y -'
modification record.
If you find no such pub, you don't ."
even need a DA Form 2408-5 ... that's So, you don't need to reconstruct a
the poop in TM 38-750, Ch 2 (18 May DA Form 2408-5 that never was, right?
65) para 4-9b(1) and para 4-26e. Right!
27

Swalaaod lid at recI pohlioubllo.. TM lI-5l815`21.289. May 7T .ol.
ol ,na ia Og.aninoatald Manala AN TGC.. -5&. -5X. SAX. -5. aad
aawon P-a.aa. Fisa lads connlad -SILL
,.. recent Adjutant GoaoeoT Do.t, TM 11-5I0-48-IS UAy. Aalaoaa
1.116. Ca oluia0 lao aplo. Equip RC.292.
doalaln n.a DA Pa.n JU1L ih lalond TM 11-5220-461-25P. Moy. Radio Sob
.ha.gn Th. .lWsd lad- oa. need ANJIG1C- I ") I. 2. 3 6. dod S.
0m DA P.aphlet 310.4 (Mar 6ai wwd aad ANIGECSOA IVI I. S. 6.
06 P~aphlew 310.6 I-l 661. and S
TM II-5L2"90-25P. Jao. adIo Sal
FIKINICAL MANUAlS ANIPC.74.
TM I."625.476-ISP. Ion. Adaptor
TM 1.0447.1. iaa. CMH-l Sal. Ta.l AIIUSM-l19.
TM 3.761. bay. Hoadliag and 0D. TM 5-1l1O-209.-12-11. J... Ow
e.asl Eodl a Mal.a-al- Cokal
IM 54310-260-15. Ie. Coapta.. 15 5=1-iI00 I2-124-I1. Apt. LUrd
CGM. 175 PSI. 0.aaama Pa... Madl Johb.
M 4312 END. TM 55-511-204-20P. Jon. OVA.
IM S-4310-261.1. 1 l... 'b.i0. T 31-l!20.203-SOPMD. Jo.. 04.37.
lola. 60 C.0 6 5 PSI Hawk- Mdl EMIL 55.]SM20.SO3-PMS Jen. 0H- 37
Na. 65 TM1I 5-TS2-203-20PMP. Ian. 14-37.
TM 5-4930-107751. o1y. oba ar.d TM 5-_1521.204_. J.a. OH 13.
S. U.I.3 13 C11 Coapwa.. -nnY IN 55-1570241109.10 aon. 0-4-7.
Spau. dl 901765.1 IM 5.5.1120lio0-2PMI. Jao. 014.1
1N 5-611 -27I-E5. S A.,. Ga. Sal. TM 39.1520-210.SOFmp. Jun. UH410.
Go. ang, 31W (La.. Eng. 400 Cod.a TM, S11. SS0-211-.2f 1J.l
M116 Mdl HI 30 MD1)1 60 Cyda [Mil UM-IA.16.
Mdl 6 320 MD). 139 IM11 6ndl DC IM 5,5-1520-211-20PRI..Jl.
10 MOIIRVI UHI A-1I.
TM S-6115-365-15. Maw. Gan wSb. TM 35.-S20-2I1-SO1MP"Jul.
Ga."od DED. T-0il.Mld. IMHu.IL
IM 91053-717-20. C2. l.a.
Anaeonat 3111. MODIFICATION WOU 0DISM
1M .-1090-70-12. May. Racel.
looprnla. High Rai,. 11611. Y AAUL Pl WAL
TM 9-129I30-15. May. Oaodranw. MG 9.1000J1S.J0/16. Jul. 160.
Fine Coo." I o..a....l. "M60AY lookn.
TM 9-I430-375-IIP/l. May. _AOMW 9-1000-246-..36/1J.1, M2 JO.
ponhlng. cal JM G
TM 9-lww ,1450250-lS`lt Ion, Nlk- MWO 9-100o.243-203. Joa,
Han oad lap. 7 65MM MO, Ouad. M6.
FM 9-13 0-701-13. C9. he. 1641A. MWd 9.12l8-25W-311.1 Jul. 14861.
166I63 Tank.. M"AIC. m11. 116, 1 A60 Toa
TM 9-135701 0-202. C1. l.a. M42. M160 9,144*-454-311116 I..
M412 A S 4000MM Goan. Wim-Mf oo. d loop
IM 9.11350-70320P. C2, Jun. M44 5 9-1440.J.SO-34J01. a. ban.
M44AI Hlaobnn Nk.H pact aod lnp.
IM 9.2350-7l3o.IP/I aad .5P/2. -MWO Y.2300,416-017. lJa. MI0
Jo.. 1X161 wit. 46eonaAdiffiOdlifuna.
TM 9.4910-471.10. lan. SparkS Plng *WU.*-530-16-30/1, /13., Jan.
Oaon.an ad T.lPm. Oll1-l Mfg Co A11070,.. ag 1A110 odowf..
Mdl 130016. MWO.-0-42$Mt]7,M/14. Jul. 16107
TM 9-4935-306-ISP/4/, I.a. and mioEA.16S0'leOlfba.
Seugmaal. (- -SW0 9- 0-245 .Lon. M106
M 9-4935-455-15. Ma.. ENIAC. M cwwtr fiatl Ioda.taln'Roh3 ag. 1090
TM 9-6911-310.S21' lJa. sorgaanl. Asq.l .
"M 10.3930-323-12. May. ForI.Hl MW11 9-23lid O-2l7-0. Al." 10109
Track. 16141199. MooIae..z

28

1WO 9-.4940'575710/l/33, J.l.
.Le .,,c In.p
MWO S15ls00.200l70/4. OAu.
UH IA I1b UriID
MWO 1S.1500-l00.30/JO. Aog.
Un IA III ad UK ID
MWO 5So 1;0.206230/1 Ion. 0.1I

MWO 11.5 I0-.106/01S. Aug CVOI
1WO 6160 10l206-34/Sb. CI. Jul.
Cv.2
MWO 15.1510-206 34/64 Aog.
Cv2..
MWO iS 1520-70.0734/7 Aug.
01.34
1WO 60 1570-2309.30/. 1.1 CH.47
1wo60 ss.l5)1-709. J0/I. 1 ..,
CH 47
1wo 1S.1S210.109.34/29. Jul.

MWO 55.1520.-0934/116. 1r.
C14 47
1616 11.1 sz0.209-34/l 31 W,.

16.0 5S.1520-209 34/137 1.1

16.0 55-1370-710.30/10. l..n.
uH ID
1WO 15-0S11210.lI.30/7. Jun.
UHInlK

TECHNICAL BULLEINSM
to 9.1000200-1I/10. 67.. EI
0.qosl Iweopapon
Il 9.1400-399-I0. M.Y. Mbi.Ro and
1-1a IlE D.qaa
TO 11-665-692-15/l. I.,.
CorlbWaliao
TO 34.9.116. May. --ft.all Hydroull,

TI'2ll3.9217 N.a DS.-alaa for Air-
-Ull G-.t 1,I1.9.- OC,,SI.
Il 34.9.112 18.J. S.alcl Mall. 9 of
A.1-11t S. 1 Pa..,
TS 55.1110-0234/l1 1l.,.0 I
1T I55-210-706 20/7 A.g. OH 12
11 55.15020.11 20S1 4.9 UH II
MISICILLAkaOUI
10 1.420.206.1 5I May. Whoulad
lal00 C111 Madl 190M
LO 56115-.14415. may. Gen Saw.
2KW. DC. ISV itn41aall 166,
IHCV C
rI 6ll 13 .65 May I 0.1 l
SC 1 .19 aI... 0. 1
TC 1.28 1... 0 I. OH II. 21. and
.6A.

~ FUEL IS
COOL ... BUT
MAINTENANCE
MAKES EQUIPMENT
.- GO! M-

K MAINTENANCE?
( HOLY STONEHENGE,
BONNIE ... LOOKIT
m( OuR TOOLS!i

WELL, TOOLS NEEP MAINTENANCE
TOO... THEY HAVE TO BE REAPY
TO GO... AND PERFORM AT
ALL TIMES!
bwmma g ,

SGLLRK, HERE,
WILL NOW GIVE YOU
A OlICK RUN-THRU
ON THE ART
OF TOOL CARE!

USE A
SCREWDRIVER BLADE TYPE PHILLIPS REED & PRINCE
THAT FfS THE
S'REW. GOT
THAT?

USING TIE
WRONG
ONI"LL.
DAMAGE THE
SCREWHEAD,
WHEN OR You
THE BLADE
BECOMES
NICKED OR
ROUNDED...
GET IT
RESHAPED. NDN NEVER USE
FOR PRYING OR
,HI-ELING! AND
D PON'T HAMMER
OIC'N THE HANDLE.

COMBINATONa OPEN END

NOW WE OA
COME TO SPANNER JO65.
WRENCHES... Box

ADJUSTABLE
TO U

MONKEY

c- PIPE

SSocKET 7

30

TOE.HOLE B I
THERE NE TRY TOENLARGEA Ij*
WIT DRILLS. HOLE BY TIPPING R
0 GIE A IOK STELET BIT OYERHEAT"' ^-
SN' LITE CUTTING OIL)

CHUCK, BIT MAY BREAK :

NEVER THROW BITS IN TOOL
BOX, YOU'LL PULL
THE EDGES.

A! KEEP'E CLEAN AFTER USING

GIRLS. THEY COME
IN ALL SHAPES
'N' SIZES, HERE
ARE SOME...

FLAT

HALF-ROUND
0
ROUND
A
TRIANGLE

Maintenance begins with good tools -
To qou, they're the family jewels.
With know-how and care
They'll always be there ...
SJust learn a few plain-simple rules!

KEEP -E
CLEAN

EM WITH
LOVING
CARE -

IF YOU WANT TO DISPLAY THIS CENTERPIECE ON YOUR BULLETIN BOARD, OPEN STAPLES, LIFT IT OUT AND PIN IT UP.

KEEP 'EtA RUST-4FREEFF
HITH A Sfr OF USEB

TAS MOPE... HE-E FOR ELECTRICAL L LUBE LITY
ALL, HUH.' ,A E SOME WORIK USS TAPE
HELPFA L SOME5..~ ON HANDLES OR
HELPFUL HINT... INSULATEPGRIPS
LOOKOVERTHAR.

CHECK

KEEP .JAWS "~ ANV LUIBE..
CLAN IAND

TURN OaLTS FACE INSIDE OF
WITH PLIERS NEVER JAW5 WHEN CUTTING

HAMMERS
OBOY...NOTICE M,
THUMBS... BUT PROPERLY
USEP, 'vCAN'T BEAT 'EM
... TAKE THIS EALL PEEN. /

THE FLAT ENV 15 GRIP HAMMER
FOR HAMMERING- TOWARIS ENP OF
THE BALL ENP FOR HANDLE FOR FULL
RIVETING. FORCE BLOW.

2 -v

KEEP CLEANANIYJr

l KEY I -
*IP CRoss HOLE I MACK
I CUT I

KEEP SAW ..'.':
AT 60O KEEP TEETH SHARP
ANGLE FIOR
RIP SAW VVATCH FORRusT
AND 45" AFTER USIN.,
AN6LE FOR KEEP OILED'
CRo55 CUT
SAW.
ION'T CUT INTO
NAILS

THE LARGER THE CHISEL
THE LARGER THE HAMMER

S USE A VISE IF WORK
IS SMALL

ALWAYS CHIP AWAy lj' ,
FROM YOU

DON'T CARRY IN
POCKET

SCOUR OFF RUST ,
ANP USE LUBE

PUNCHES
(NOT THE KNUCKLE
KIND) AND THERE
ARE MANY TYPES

KEEP YOUR TOO 5
IN AN ORGANIZED
MANNER AND YOU'LL
KNOW WHERE THEYr-
ARE ALL THE TIME!
.-BE CAREFUL
ABOUT LENDING
'EM OLUT

SrARTINC
PUNCH

PIN
PUNCH

ENTER
PUNCH

HOW ASOUT
A MANY- POC/E
TOOL ROLL-
HANDV 'N' VER
k PORTABLE. A

A TO START
TO DRIVE OUT
PINS OR
R IETS.

f THEN USE
PIN PUNCH
TO FINIt5.

TO START
HOLES TO
DRILL.

TO ALINE
PARI5
FOR EASY
ASSEMBLY.

WE MARK
S OUR TOOLS
WITH A
DISTINCTIVE
T COLOR-ALWAYS
FIND'EM,THAT
WAY.

DIV YOU
TELL THEM
ABOUT
TM 9-245
) (SEP 60)?
IT'S A GREAT
SooK ON WRIGHTT!
O WHO' THE
CARE. WISE GUY WOT
SWIPED ME -
HAMMER? 9

' *1

COMMUNICATIONS

t W_ ^^

Sure, the AN/URC-4 radio set is
being replaced by an improved AN/
URC-10, but until then, you've gotta
live with what you've got, and you've
got the URC-4.
So, about once a month minimum
would be a good time to check the set's
battery for leaks, corrosion and output.
If it's not in good shape, replace it.
While you're checking the battery,
you might inspect the set screws in the
three controls on the side of the set -
the tone, receiver and transmitter push-
buttons.
The set screws work loose,and, ahem,
you lose control.

IF SCREWS ARE 51NU6,
A PAB OF VARNISH WILL
KEEP 'EM THAT WAY/.

If they're loose, it's the unit repair-
man's job to tighten them. Reason: the
screws can be over-tightened, and the
equipment will be damaged. It takes
a knowing hand.
Finally, sometimes when you change
bands with the (Sl) band switch, cur-
rent will are between the switch con-
tacts and the chassis, shorting the
switch. You can't communicate, of
course.
Hold the sweat. There's an easy fix,
since either you or your repairman can
put a piece of insulating tape across
the contact (inside the case, that is).
Naturally, no arcing.
TAPE ACROSS CONTACT

LIKE THE SET YOU SAVE MAY
FRTURN THE FAVOR.

! STSCREW

STOP STOP
BREAKAGE

Gettin' pussycat purrs, Pal ... or mournful, muddling motorboat sounds or
chattering when you're teaming up your AN/PRC-25 radio set with an
AN/GRA-39() radio set control group?

Too much twisting on the RT's volume control knob can break the stop ...
besides filling your head with sour sounds.

TK-25 TOOL KIT BOWS OUT

l/ Don't panic if you can't find the
"-'PW -j TK-25/GF (FSN 5180-408-1892) listed
F-?F in the latest supply catalogs. It's been
"'\, deleted on purpose and has been re-
placed by Tool Kit, Motion Picture,
LS-52 (FSN 5180-078-4810). You'll
find that one on page 4.87 of Fed Cat
C5180-IL-A (1 Jul 66). Don't turn in
your TK-25's, though. You replace
them, as needed, with the LS-52. It'd
S pay to grab a look at SB 11-561 (Feb
64) on conversion of the TK-25 to the
LS-52.
38

BE AN INSULATOR INVESTIGATOR

0UL LOCK
LER, IAMPRE551iE
Inl PRIVATE ;LIRIAKIN, BUT
MOW ABOUT \'R
INVESTIGAt 1 RT-70?

When lamp-changing time rolls around for the MCS dial of your RT-70
receiver-transmitter, be cautious.
Chances are, an almost invisible insulator in the recess of the lamp screw will
try to get away from you. Be watchful.
The glue on the back of the insulator dries out, and the insulator can drop

RT-70

SCREW

IF INSULATOR'S GONE--
REACH FOR THE GLUE.
without you seeing it. Worse, since it's transparent, you've got to look three times
before you can tell it's missing. Be persistent.
Otherwise, pretty quick after you replace the lamp screw you'll know the
insulator is not there. Like, just about as soon as you turn the power on.
Without the protection, the lamp screw shorts the filament voltage to ground
... which sends your set off for repairs. FUNCTION SWITCH
Naturally, that does not put much light in the dial window.
A burned-out lamp can give you other problems. F'rin- ff u ,n M.
stance, if the lamp's shot and you turn the RT's function
switch to CAL position, you trip the thermal relay in the
power supply.
The set will stop operating but no sweat on the fix.
Turn the set off. Let it cool for a minute or two. Turn it
on. It should work fine ... and if you replace the lamp you IF RELAY TRIPS...
can even turn it back to CAL. TURN SET OFF

0- T0
TOO

HANDLE

Whoa! Holdup! ...
Before you turn the juice loose from the generator set into your communica-
tions equipment make sure the voltage is hooked up right for the load your
equipment will handle.
Take, f'rinstance, the AN/MCC-6 telegraph-telephone terminal, SB-675/MSC
or SB-611 patching communication panel. About all the power any of 'em will
take is 115 volts for 60-cycle service.
Forget, and shoot, say, 220 volts to 'em like you would get from a PU-474/M
(CE-106-AC/WK9) or SF-10-MD model generator set which has multiple voltage
and ... POW!
That extra power will burn out your equipment and cut communications
quicker'n a female-type can change her mind.
Of course, if you're extra lucky, a fuse will go first and SYA (save your
assemblies).
Your best bet's to see to it the generator hookup terminal plates. phase fre-
quency selector switch or whatever type power converting system is used is set
for 120 volts on a 120/240 V multiple-voltage generator set.

Ramming or jamming and jerking And, remember, gently does it or
or tugging on your teletypewriter set's you'll lock the governor worm spring
governor adjustment worm can keep and all the pushing and pulling won't
the message coming in garbles. get the motor geared for 60 WPM.
That's right.... A locked spring means a trip to your
So, your best bet's to gently push the support to free 'er.
worm in to speed up the motor or
gently pull it out to slow 'er down ~I... PuS1
on a set, like frinstance, a TT-4()/TG ) U ".V0
or TT-76/GGC.
Tapping your tuning fork on the
heel of your hand and eyeing one of -
the little dots on the governor target'll
let you know whether the motor's fast
or slow.
If the dot's moving to the left, push .
the worm in.
If the dot's moving to the right, pull
the worm out.
Wait a minute or three, though, be-
fore adjusting the motor speed so the
motor'll warm up.

'ANDS OFF THE
GOVERNOR, GOV!
Ruddy well daily with the motor
speed adjust, if you must. You can even
have a go at your teletypewriter arma-
ture and range dials... or the line
) current.
SI But, please don't touch the gov-
ernor, Guv!
The other adjustments are in your
Old Baileywick, but the governor ad-
justment is strictly a job for support.
Obviously.
So 'ands off Guv, luv.

HOLD IT c-
GROUND MOBILITY

"5EE THEM'
S600-SES OIN
SVI NTE- "

Your engine (gasoline, multifuel or diesel) can be pampered to death ..
like where you use lightweight winter oil before cold weather really sets in.
Sure enuff, you'll see some warm-hearted types rush in when the first fall
frost withers the pumpkin vines. They figure winter's right on top of 'em, so
they drain that heavyweight summer oil and fill up their crankcases with winter-
weight oil.
Comes a stretch of Indian Summer warm, or even downright hot weather -
and that poor ole' engine is dyin' for lack of good lubrication.
So make sure that's really Ole Man Winter breathing' down your neck before
you make your seasonal oil change. A week of steady cold usually is a signal that
winter has really set in. But check the TM's and LO for your equipment to get
the exact poop on seasonal lube change.

M151 U-JOINT LUBING

That Adapter, grease gun coupling,
FSN 4930-288-1511, in your No. 1
Common Tool Set's lubrication kit is ,
just the thing for putting the lube to OU CAN
your M151 4-ton truck's U-joints. F> LEIBLE
You can get this flexible adapter alone. APAPTER
It's listed in SC 4930-IL (Feb 66), and ALONE.
is furnished in Lube Kit,FSN 4930-357-
6301.

---- - a -
-ELECTRIC BRAKE LOCK

Dear Half-Mast,
When operating our M543 5-ton wrecker's crane or rear winch, we're sup-
posed to have the electric brake lock applied. Should the brake lock be used
when operating the wrecker's front winch?
SFC G. A. F.

Dear Sergeant G. A. f.,
The front winch usually is used alone only for recovering the wrecker itself.
You'd either be using the wheels for extra power or you'd want 'em rolling free,
so you wouldn't want the brakes on.
But if, for some reason, you're using the front winch alone for recovering
another vehicle, you should have the electric brake lock on.
Just about as important as when you should use the brake lock is when you
shouldn't and that's for ordinary parking. The lock keeps constant pressure
on the hydraulic brake system and, if held on for a long time, could result in a
bust-through in the lines. There's not much point in taking the risk when the
wrecker's got a mechanical parking brake meant just for ordinary parking.

WINOICH
OPERATION

U
r" ...
/-

O M49C TANK TRUCK .
HOW MUCH GROUNDING?
.--Y -

Dear Half-Mast,
TM 10-1113 (Jul 65), para 48b(l) says the dispensing nozzle against the fuel
tank opening is enough of a bond when refueling tracked or wheeled vehicles
from a tank truck. "No other bonding or grounding is necessary."
So, is a bonding wire and clip on the nozzle a required part of the M49C
/2-ton tank truck's equipment when the wire's not used?
SSgt W. K.
Dear Sergeant W. K.,
First off, you do need a ground in addition to that bond.
AR 385-55 (Sep 65) says, in para 19i(2): "Tank trucks will
be firmly grounded prior to approaching the orifice of con-
tainer with the delivery nozzle of the tank truck."
About the nozzle bonding wire, yes, it's part of the M49C's
equipment, along with the filtering system, that makes the
M49C a dual-purpose tanker for refueling tracked and
wheeled vehicles and also for refueling aircraft.
TM 10-1101 (Jul 65), para 133, tells when the nozzle
bonding wire must be used for refueling aircraft.
The bonding wire comes as part of Nozzle, fuel dispensing,
FSN 4730-565-5181, in TM 9-2320-209-20P (Jan 65). If
your nozzle wire's missing, you can make one from a piece
of cable like's on the static grounding reel. Fasten one end
securely to the nozzle and put an electrical clip on the
other end.
-44

TARP TIEDOWN TRICK

/OGRUiT I
SOMEHOW THINK
THIS 15 NOT THE
WAY TO PO THIS
OPERATION

That pigtail-style wedge hook set-up on the side of your cargo truck was put
there to make things easier for you-so don't try to make it tough. It's a
lashing-type wedge hook (FSN 2540-706-4246).

UP EDGE
BEWENIN TIGHT.
BETWEEN TUCK IN
AROUND HOOKS I ENDS
WEDGE

That does away with complicated sailor-type knots, and makes putting a tarp on
or taking it off just a matter of a few flips. Easy to get a tarp taut over the top, too.

SAME FOR M35A2
Your M35A2 2V2-ton truck or other M44A2-series 2,'-ton vehicle uses the
same air cleaner indicator that's on the M44A I-series vehicles. Ir's indicator, air
clean, FSN 2940-909-2453, listed in Fed Cat C2940-L-A (1 Aug 66). The indi-
cator's an authorized item for TM 9-2320-209-20P users.
45

JOLW SO WHAT'S TORQUING ABOUTT'TJ U
Anyway you turn it-torque is twist, the kind that produces rotation. It's
such a screwed-up force that it takes two kinds of measurements to peg it. It's
measured in ounces and pounds and inches and feet. Tuelve inch pounds make
a foot pound.
Torque equals force times distance. It's based on the law of the lever. Torque
is not tension, which has to do with pull.

/? Th. iaa~ _a

TORQUE (TWIST) IS NOT TENSION (PULL)

YOU TORQUE BECAUSE ELL' E NEE
Long ago, engineers found that ma- '' 7 SOMElTIN G NEB%...
chinery put together with bolts and o '.E ILL CALL IT .
nuts had to be tightened just right in T OR- E...
certain places to give maximum service.
To just snug down or tighten a nut or
bolt wouldn't hack it!
They found out, f'rinstance, that
spark plugs and bearings had to be
torqued just so to get the right
performance. ra.l

They discovered that engine cylinder head clearances could be lost by over-
tightening head bolts. The result loss of compression, wear and tear on the
valves and valve guides, poor fuel economy and (ugh!) early engine failure.
Engineer types designed light-weight equipment and torque became even
more important.

- JmI- i -6- I,
7 SPARK PLUGS I ;WHEEL HEADS
I BEARINGS HEADS
Take some applications. A bolt may be stronger than the parts it holds together.
If these parts happen to be aluminum or magnesium, over-tightening can pro-
duce real headaches. Light-weight metals can be squeezed out of shape and
distorted. If they're in the form of a casting, they can be cracked, or the threads
in 'em can be stripped. Then you'll find yourself drillin' and tappin' for sure.

OrF A TOLT CAN
CAUSE PROBLEMS.

4

IHE 0:; :;w, .,,i PUOP

Not only did the engineers find out that special twistin' is a must they noted
torque values as they designed the machines, and they passed these on to you
in the pub that goes along with your equipment.
The organizational maintenance pub may have a table with the standard
torque values, and special torque values may be called out in the text.
No mechanic worth his salt would tackle a job without his torque wrench and
the know-how of using it.

EXTENSION MATH
If you're usin' a regular torque handle without an attachment that adds to the
length of the wrench, you just torque to the value indicated in your pubs.
If you're using an extension that does add to the length of the wrench, though,
there's a little more involved, and you'll have to put on your thinking cap and
do a little figurin'.

SLever length T = Torque exerted
I L= laer ench t he end of
E NuG of the wrench the adapter.
HOVLE ER

-E THIS
FPAILQ n):

A =length of the
T= Wrench dial adopter.
setting

Now just suppose that you're wrappin' up a job on your equipment, and you
come to a nut or a bolt that has to be torqued, but you can't get at it with a
regular socket. Let's say it requires a 6-in adapter on that torque wrench to reach
it. The pub says the nut is supposed to be torqued down to 65 foot-pounds. Fine!
48

FORMULA 5YMBOL
TA_ TORQUE '",
SAT ENDOF
ADAPTER

DIAL- A
T, S SETTING
AM LENGTH OF
S4DAPTER/,

L F-VER LENGTH
OF WRENCH
=.... P .

E 9 + DIVID P )

-FT r+.5FT
N AFT

-..,,, DoeDBY

43.3FT-Ls~. 1 )

) )WILL OiVE you

-rTO BE SURE:
MULTIPLY 43.35X I.5 ANP DIVIPE
Y IP~T:
(TWxLUA) 4.3.Xl.5 64,95
L I
OR APPROX. 65 F. LLR

So you apply slow steady pressure on that torque wrench handle till the dial
reads about 43 foot-pounds, and you've got it.
Before you torque any nuts or bolts, be sure the threads are in good shape.
Nuts and bolts have to be free running. A little oil on the threads will help
(when a torque table calls for it). If they aren't free running, you can't get an
accurate reading.
USE THE RIGHT WRENCH
There're many different torque wrenches available. Just be sure you use the
one that has the right torque range for the job you have at hand.
The most common types are the bar or cam-type, and the flexible beam type.
You set the torque you want on the handle of the bar type, and tighten until
the wrench slips or "breaks". That's the signal that tells you that you've got
the right twist and to ease off on her.
The flexible beam types usually have a dial or a scale right on the handle, and
you tighten untilthe dial indicates the torque you want.
Some torque wrenches are designed for special jobs, like the T-shaped, pre-set
torque wrench in the aircraft general mechanic's tool kit. It's intended for tight-
ening hose clamps.

49

S..LOW.'
AND
SMOOTH

TREAT 'EM lTENDERY '. -
Torque wrenches may be iade of
; steel, but you've .gortto give'em the
:. kid-glove treatment if you exf emt -
Ito pur out like they're supposed to. Aey
~ '.won't stand for bangi' around,' and
You'll be the one to suffer if you drop
'em on the floor or the tool bench.,
You want to be mighty particular
where you lay 'em, too. They usually along with
come in a special box, under special where 'hey.'ll
wraps. That's whear they, belong when Itdoesnt'take
you're not using 'em, not in the-tooJ box to throw' a rei

S D90 KEEP THAT DATE-TO CALIBRATE

Your torque wrenches need regular
servicing. TB's published will show you
the torque wrenches requiring calibra-
tion, and give you the time interval and
level of certification.
For example, TB 750-93-10/1 (Nov
64) says to take 'em in for calibration

the rest of your toods
get scratched or dented .
much more than a scratch
ading off.

every 90 days or more often if need
be. Like if you should drop one ac-
cidentally, it should be calibrated before
you use it again.
If it's not one of the wrenches that
have to be sent back to the factory (like
the TCI-750), the TB's also tell your
direct support unit how to do the
calibratin'.
When a torque wrench is calibrated,
the man who does the job fills out a DA
Label 80 and puts it on the wrench. This
label tells you at a glance the date the
check was made, and the date the next
calibration is due.
Remember now, tightening tasks
won't be guessin' games when you
tackle 'em with a torque wrench that's
in shape.

.0

AS YOU GO 'ROUND AND 'ROUND...

KEEP COUNT

cAD
!'TE7 IT DOWN

4LLT7

I. :

BALLET CONNIE, GOT W' L
WITh PA FORM 2408-1.

_-

Ever) click or ever tick and ma) be both -means some-
thing special in the life story of sour equipment.
That's why it's equipped with meters like the odometer
and/or hourmeter.
And that's %h) )ou'%e got the dash I daily and dash 1
monthly logs on most equipment that's going steady (for
the list. see para 4-26 of TM 38-750).
If you're an operator or crewman, that DA Form 2408-1
daily means something special to you as well as the equip-
ment. It's your job to see that it gets the proper entries -
top to bottom and side to side though someone else (like
the maintenance supervisor) fills in column h. And the dis-
patcher may fill in column a.
When sou start with a new DA 2408-1 daily, you want to
get away to the right start no scratching off and no clash-
ing of gears.
Even though it's called a dails log, you're required to make
entries only on days when the equipment is operated or
at least started up to complete an inspection or ESC check.
And you start a new form the first day of each month or
after all lines (front and back) are filled. Or, if the equipment
is operated only a few days each month, you can start a second
month (or more) on the same DA 2408-1.
51
MORE

So, here's the way you keep your record of clicks and ricks and other
required info on DA 2408-1 daily. Follow it block by block and column hv

colum n. Rgistialion br
o| serial number
Nomenclarure and Dole of nrt per- Dote neAl lub
model ISame as on iodc PM service ,ton due
DA ?408.8 and DA in pennl so it's ln pencil for
2408 1 monlhlyl eaily changedl) eoy thoange) Check d iy
Miles or hours due MIles when due also box
also helps. h lps. Use hours if LO
sets Lube intervals in
hours J I'1 AN
.---3206 HORMEER

/ ', CARGO /35A/ 3.06 I. F LuREE

3 OV6 12000 3NOV66 /2,000 HOLH 1 i0

IIT r ,t .- ..C. : ,.aer

amo At- E T so e

S~ INot
AN i9 orbtormponensrr f AS gn shown) s lo
ntiheck here to veri1 entire, by
DOPOMTEr, fuel Brought EFd am only i nies me hano
operoloror orS dded If ofull p In columns moleonrne
cre w will ond or m o start ew II found b thru f.
eniet month on some pu oplraa-
lInrdol ISihDc form, draw Ine ;n olu ionl.

ae daled lo olr id oar shown |ool e3 s BT

\- iT dropped by -1 ,' F "-
OPO~tEER. pfauorh Fe. oe one no Eri
column to enter fauli
enenumber o f n Ir drops) oound.
52

(

Your dispatcher should have a Julian
date calendar. If nor }ou can make up
a Julian date. F'instance, take the last
6 from 1966. Then follow that m ith
the number of dass since I Januar)
1966. Since i Juh 1966 is the 185th
dac of the sear. the Julian dare is 6185.

Both hours and miles entries are
required in column b if the equipment
has both an hourmeter and an odom-
eter. Sometimes these meters vear other
names, too. Sometimes the odometer's
known as a speedometer, and some-
times an hourmeter as in the case of
the NM15AI truck is included in the
tachometer.
ASAH NAM'E IL
J1ULIjN N' THI S
,AAH ,aLENPA.

-r'

Also esen if there is no hourmerer
-estimated hours are required on DA
2408-1 if the internal for lubrication
or other services are stated in hours
On the first of each month, total
hours and/or miles accumulated must
be brought forward to the first open
line of the DA 2408-1 if it's a new
form. Your supervisor needs monthly
totals for DA 2408-1 monthly.)

5 3 M E

When you make entries on faults in
column e, check both the DA 2404 used
for the before-during-after-operational
checks your daily inspection and
DA 2408-14, the Uncorrected Fault
Record, in the log.
Symbols to be used for faults you
find are listed, with definitions, on DA
2408 in the log and in para 3-4c(2)(j)
of TM 38-750. If there's a question
about which symbol to use for a fault,
ask your maintenance supervisor.
If your maintenance supervisor asks
you to make the entries on DA 2408-1
monthly, get the totals from the DA
2408-1 daily and make the entries as
shown below. Leave columns e, f and
g blank.

I NOMENCLATuRE
TRUCK, CARGO M35AI
3 NEXT PERIODIC SERVICE DUE (Dole)
E

READING TOTAL
DE NATURE OF
OF ENTRY O ADDE z z RATOR OR
MILS EW CHIEF

___ 12 15

Ml -

EMPTY DECON HOLDER
When the situation allows (and local SOP says so) you can keep the M11
portable decon (FSN 4230-720-1618) stowed in the supply room, instead of hang-
ing on your equipment.
The decon's bracket, itself, natch, must be installed and kept in good order.
But, the empty container, its nitrogen cylinders and the DS-2 decon agent, can
sit safely in storage until needed.

B ^ ^ ^' ;':-f '5.** *** iOT5 O F TH.,/
^^fc^^ -^j.,^-<^ eRPP KEr.' !

An empty decon bracket, of course, needs a bit of special care. You gotta be
careful something else isn't hung on it, for one. And, you have to take care it's
not banged, busted or used as a foot stool.
The OK on leaving the decon in storage is in Change 2 (20 Dec 65) to TM
3-4230-204-15.

OTHIE DECON NEWS
The .change, which incidentally changes the -15 TM to an organizational
manual, also gives you a cold-weather caution. It says the decon's not effective
in temps below approximately -15 F.
It also OK's use of a three-strand-wire lead seal (like the kind used on some fire
extinguishers) in place of the two-strand-wire seal (FSN 5340-598-3433) listed
*fotbe decoa. on page 20 of the TM.
.s's'.rdthree-stmnd-wire seal is a non-stocked item, tho. So in addition to quot-
';iSN,05340-NSN, you'd best als quote the TM change, if you order the seal.

250 CFM COMPRSORS... BEGIN BEFORE YOU START

TO START HE UP
I ----

3. Inch machine over, a half turn or so at a time, by pushing starter button and letting up
then pushing again until il s turned over 5 or 6 times This clears oul excess oil that would
otherwise break the vanes and it s the most important item of all

DAVEYS ARE DIFFERENT

PTA 1'AEV Y5Q-CFkA UNIT
H 1- -50 kANITIQN IT
HERE'5 uHAT 5QL T 22'

LEA

2. Pull idle control OUT, then push start button and safely switch button at the
same time. Hold safety switch down after engine catches until oil pressure is
more than 15 PSI.

And if either kind won't kick off after 30 seconds of trying,
give it a 2-minute rest.

SOr

GET A CHARGE OUT OF THIS
Stymied in your search for C02 for a limp life preserver? Here's how to match
your life preserver to your cylinder or cartridge.

ALCOHOL AND DIESEL FUEL
Change I (Feb 65) to TM 9-207 has a caution saying that alcohol should not
be added to diesel fuel. This change and the short blurbs in PS 155 (page )
and PS 158 (page 10) on this no-alcohol bit were meant only for tactical vehicles
that're covered by ThM 9-207. Engineer type equipment is covered by TB Eng
347, and commercial vehicles are covered by speci6c manufacturer's instruc-
tions. Some tactical vehicles were made exempt by special teletype directives and
are not involved in the anti-alcohol caution. Before applying the no-alaohol-in-
diesel-fuel info. check real close and see whemer TM 9-207, Change 1 (Feb 63)
applies to the equipment you're winterizing.
59

FIX 'EM..
ATTENTION
OPERATORS-
( NE 600r AA
TO KEEP yOUR
HEAl Y EQUIPMENT
ROLLING 15 T0 USE HE
NEn TUBELESS TIRE
REPAIR KIT WHEN
y'Ou GET A PUNCTuRE) '
s, HERE IT IS.: /" '

TUBELESS TIRE REPAIR KIT, FSN 4910-922-6921

Bonding Compound, Tire Repair 4910-922-6917

The k ey to e, once you get the hng of t. I
The kit's easy to use, once you get the hung of it. I

PROBING AND WORKING
COMPOUND INTO PUNCTURE
1. Adlust needle length to 2 inches, sticking
out of tool IRelensing lever lock on handle
leti you move needle in or out If you
can I gel hold of the needle, unscrew head
of tool and push needle out I Dip needle
'.: inch in bonding compound Push ntedle
into puncture following duectior of in
ury (You don t hnve to let air ou of iret
to make repair I Then pull needle out of

LIFT LEVER
TO RELEASE
NEEDLE

THREADING NEEDLE LAN
2. Pull needle ouT of tool to full length Draw
material out of Tool and thread 4 inches
thru needle eye Ior light-duty lIr 18 inches
for heavy-duty lIre) For large pundures
thread Twice that much thru needle and
then thread back thru for double strand
No* push needle bock into Tool to ?-inih 4" FOR LIGHT
length nIIT TInr

I Box, Metal, Tire Repair Kit

This kit's available thru the U.S. Arm

Command, Rock Island Arsenal, Illinois 6102
Command, Rock Island Arsenol, Illinois 61202

DIPPING AND PLUGGING
3. Dip end of threaded needle inch imo
compound. Grip tool so lever locks needle
and push needle inio injury with steady
pressure. following direction of puncture
When front of tool reached. Tirre release
lever and draw 2 more inches of needle
from tool Repeat process Iwath only ?
inches of needle ot a time) until loose end
of material is : inch from lire
WITHDRAWING NEEDLE
4. With steady pull, withdraw needle until
tip is 1': inch outside of tire CuI material
off at needle eye Repeat 1 through 4 until
puncture or cut is plugged Try it For any
size hole but never over pack (Cutting
material diagonally makes a point for
eaosle threading of needle I

I PUSH INTO
1i/" INTO PUNCTURE
COMPOUND

0 11111R:E

YOU PRIVERS MAKE SURE YOU
HAVE THE KIT WITH YOU SO YOU
CAN MAKE ON THE SPOT REPAIRS.

SI You thread your needle again and repeat
the same steps You do this until you think
there's enough thiead in the puncrule
NEVER OVER PACK.

Sake the cup off of the plastic bottle and
use ii as your measure for leak detector
Use a half cap of leak detector to a fall
bottle of *ater Shake well, turn upside
down and spray repaired area I il foams.
thpn you'll need to add more thread

After the puncture has been repaired and
lesded for leaki, then cut the threads
/ inch from the lace of the lire

Equipment getting this kit as OEM (BIIL) includes loaders, graders, wheeled
tractors, scrapers, 20-ton RT crane shovel, and the 6,000-/and 10,000-lb RT
fork lifts.
This set will be issued as part of OEM for new equipment. Operator's TM
changes or revisions will authorize the set for bulldozers, rough terrain fork
lifts, scoop loaders, road graders and towed scrapers that roll on tubeless
pneumatic tires.

TANK'S CBR FILTERS... TAKE 'EM OUT

In spite of everything some Joes get slap-happy with,water when they're
cleaning the inside of their tanks. When they do, they're putting their gas-
particulate filter unit out of commission.
Those units aren't waterproof and when water gets in, the filters become
saturated with water. When that happens, it would be like trying to breathe
through a wet sponge if you tried to breathe through the filter unit.
To make sure you don't ruin the filter units in your tank, take 'em out before
you do that cleaning job.

It's simple to do once you get the hang of
it. To remove the ABC-M8A2 units from the ... THE GROUND WIRE
M48-series tanks disconnect: :-. :- I

THE
RRBAfFT

Then lift the filter unit out-and
lease it out until you're through with
that scrub job.
When )our tank's going into storage
)ou can save those filters if you'll take
them out of the tank. wrap them in
waterproof paper, and store them in a
dry place until you need them.

WARRANTY GOLD

Getting new parts for your equipment for-free is just about like finding that
gold at the end of the rainbow.
It takes a little work to get to that gold, but not as much to get those for-free
parts if your equipment breaks down while it's still under the one-year warranty.
You shoot the word to the commodity command that provided the equipment
by sending them a DA Form 2407. Maybe the piece of equipment has faulty
materials in it, or maybe some of the parts have gone bad, then tell them on
a 2407.
Here're some of the commercial-type items covered by a one-year warranty:
Refrigeration equipment, ice making machines, water coolers, food cooking,
baking and warming equipment, power operated kitchen equipment, office ma-
chines, commercial appliances, industrial and household laundry equipment,
printing and duplicating equipment, heating and dehumidification equipment,
dishwashers and coffee urns.
Be sure to list make, model, serial number, contract number, and any other
info that might help identify it. And the sooner you send it the better so you
can get within that year's warranty.
Send the 2407 to the U.S. Army Mobility Equipment Center, ATTN: AMSME-
MAO, 4300 Goodfellow Blvd, St. Louis, Missouri 63120.

T OOTH

There's one way to make sure you're
getting the right bucket tooth for your
Model 175A-M23 Clark scoop type
loader, and that is to measure the tooth.
If you get one from supply that's the
wrong size (even though it has the right
FSN and Part No. on it), turn it in
and tell them you need one of the
right size.

MIX-UP
FSN 3805-803-3487 (Port No. 526693)
should get you this tooth (listed in TM 5-
3805-200-20P, Jan 66)-
MAKE SURE IT'S
THE RIGHT SIZE
CENTER
TO CENTER

64

--'

g,

By and by the CMMI rating crew will
visit you. So make sure you get a pre-
view of what to expect when they in-
spect. How you're rated is clearly stated
-from team composition to report dis-
position-in DA Pam 750-10 (Jun 66).
Could save your ah skin.

/4e 7aoe 7ae&
When you aircraft types don't find a
torque table in your maintenance pub
- like the Huey TM 55-1520-211-20 (20
Jan 66)-there's always TM 55-405-2
(30 Aug 62) on aircraft hardware. Sec-
tion V, Table XVI is used for standard
NAS and MS nuts and bolts.

You're right! That "60-milliampere"
cited on page 9 of PS 166 is wrong!
The way it should've read was, "If your
LINE SELECTOR switch is set at '60,' you
should adjust the bias resistor (of your
TT-76 or TT-98) for a reading of 12.25
milliamps. If the LINE SELECTOR switch
is on "20," you should get a reading of
8.75 milliamps.

F9o New Ocuait
If there's a newly organized outfit
near you pass the word. Change 7
(30 Aug 66) to AR 310-1 gives the scoop
on how they get all the publications they
need to start operating. Pass the word.

Would You Stake Your Life, on
the Condition of Your Equipment?

Hdi

?, 7MA 7 's/

IS THAT
TEMPERATURE CHANGE
CONSISTENTLY
IFN THE NEXT RANGE .
ON YOUR LO F
IF SO, PON'T SWITCH : ....:.. .
3ACK BECAUSE OF A
SHORT CHANGE IN
WEATHER...

STAY CHANGED!!

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